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Alona [7]
3 years ago
9

Determine the area of a square with side length 2√7 in.

Mathematics
1 answer:
Ainat [17]3 years ago
3 0

Answer:

28 inch

Step-by-step explanation:

The length of all four sides of square is equal.

The formula used for finding the area of square is:

Area = (Length) × (Length)

Thus, the Area of square whose length is 2√7 is:

Area = 2√7 × 2√7

⇒ Area = 4 × 7 = 28 inch.

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Is 40mi+98mi+104mi= a right triangle
alexira [117]

Answer:

no

Step-by-step explanation:

A right triangle consists of one angle being 90 degrees. Contrast to this picture, the triangle has no angle of 90 degrees.

5 0
3 years ago
What is the volume of the cuboid in cm3 ?<br><br> What is the volume of the cuboid in mm3
KengaRu [80]

Answer:

3150mm

Step-by-step explanation:

1cm is 10mm you convert it then times it together l x b x h will equal 3150

7 0
1 year ago
Find segment ET. Please and thank you​
Solnce55 [7]

Answer:

x=9

Step-by-step explanation:

Use the intersecting chord theorem:

RE*ET = UE*ES

Substitute values

21 (2x+2) = 30 (x+5)

Expand:

42x+42 = 30x + 150

transpose and simplify

42x-30x = 150 - 42

12x = 108

x = 9

4 0
2 years ago
a discount of 15% saved jackie $57 on office supplies. what was the price of the supplies before the discount?
kolbaska11 [484]

Answer:

$38-

Step-by-step explanation:

15% = $57

57 ÷ 3 = 19%

15 ÷ 3 = 5

100 ÷ 5 = 20

19% × 20 = $380

6 0
3 years ago
Almost all companies utilize some type of year-end performance review for their employees. Human Resource (HR) at a university's
balu736 [363]

Answer:

The Answer is 76.

Step-by-step explanation:

Given the normal distribution " 10% of employees (rated) exemplary, 20% distinguished, 40% competent, 20% marginal, and 10% unacceptable'',  we can see that exemplary employees are top 10% rated employees.

We have the formula for normal distribution:

z=(X-M)÷σ

where z is the <em>minimum z-score </em>for top 10% employee, X is the <em>minimum </em>score for top 10% employee, M is the <em>mean</em> of the score distribution, σ is the <em>standard deviation</em> of the score distribution.

The z-score we are looking for is the value "a" that separates the highest 10% from the lowest 90% i.e. P(z≤a)=0.90

If we look at z-table, corresponding value for a is 1.28155

We can now put the values in the formula:

1.28155=\frac{X-50}{20}

So X=(1.28155×20)+50=75.631

Therefore minimum score for exemplary employee is 76.

3 0
3 years ago
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